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Terror threat raised to ‘Severe’ IN U.K.: Police officers stand guard in central London yesterday, above. British Prime Minister David Cameron ordered the U.K. terror threat level raised to ‘severe’ on fears American ISIS fighters, such as Douglas McAuthur McCain, will return from the battlefield overseas and carry out lone-wolf operations.

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The barbaric militant group ISIS could use traitorous American fighters to launch lone-wolf terror attacks against the United States drawing on the scores of U.S. citizens in their jihadist ranks, international security experts said.

The chilling warning comes as British Prime Minister David Cameron ordered the U.K. terror threat level raised to “severe” yesterday, the second-highest rating.

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